Motor-driven set-works for sawmill-carriages.



M. &'H. W. GARLAND. MOTOR DRIVEN SET WORKS FOR SAWMILL GARRIAGES,

APPLICATION FILED MAR. 15, 1909.

Patented Feb; 15, 1910.

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WITNESSES:'

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M. & I W. GARLAND. MOTOR DRIVEN SET WORKS FOR SAWMILL GARRIAGES.

APPLIGATION FILED MAR. 15, 1909.

949,068. Patented Feb. 15, 1910. .42 3 H a mimics-SHEET 2.

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APPLICATION FILED MAR. 15, 1909.

Patnted Feb. 15, 1910.

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U TED STATES MICHAEL GARLAND AND HARRISON W. GARLAND, 0F BAY CITY, MICHIGAN, AS- SIGNORS TO THE M. GARLAND COMPANY, OF BAY CITY, MICHIGAN, A CORPORA- TION OF MICHIGAN.

MOTOR-DRIVEN SET-WORKS FOR SAWMILL-CARRIAGES.

To all whom it may concern:

Be it known that we, MICHAEL GARLAND and HARRISON W. GARLAND, citizens of the United States, residing at Bay City, in the county of Bay and State of Michigan, have jointly invented certain new and useful Improvements in Motor-Driven Set-Works for Sawmill-Carriages; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to set works for saw mill carriages.

One object of our invention is the provision of means for operating the set works by means of a motor, either gasolene or electric.

Another object is the provision of novel means whereby the adjustment of the cut is obtained.

Still another object is the provision of means for maintaining the knees and their actutaing screws in proper relation and for compensating for wear.

Another object is the provision of a mechanism which absolutely insures the accurate setting of the work from which is cut boards of desired thicknesses.

To these and other ends, therefore, our invention consists in certain novel features and combinations such as will be more fully described hereinafter and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a top plan view showing one form of our invention applied to a saw mill carriage, Fig. 2 is a side elevation of Fig. 1, Fig. 3 is a detail View of the motor and its cooperating parts, Fig. 4: is a detail View of the adjustable controller mechanism, Fig. 5 is a detail view of the rack and connections,Fig. 6 is a detail of the eccentric, Fig. 7 is a detail view of the lever for engaging and disengaging the gears, and Fig. 8 is a detail top plan view of the dial and the friction drive.

Heretofore it has been necessary to set the cant over by hand to obtain successive cuts or boards, the cant being crowded over by means of the knees actuated by the rotation of screws. The screws are each simulta- Specification of Letters Patent.

Application filed March 15, 1909.

Patented Feb. 15, 1910. Serial No. 483,451.

neously actuated by means of a set shaft carrying bevel gears meshing with similar gears on the screws, and the set shaft has heretofore been rotated by gearing receiving motion from a wheel of the carriage. The actuation of the head blocks was manually controlled and quite frequently mistakes occurred in the cut. Furthermore, considerable cumbersome machinery was necessary. In our invention we have greatly simplified the construction and have provided a nearly automatic adjustable mechanism for moving the head blocks.

Referring to the drawings, A indicates any suitable saw mill carriage having the wheels 1, 1, the head blocks 2, 2, on which the knees 3 slide, and the screws 4, 4 having the bevel gears 5, 5, whereby the knees are actuated.

The offsetting mechanism is omitted for the sake of clearness.

Our invention consists first, in the pro vision of a motor mounted on the carriage and adapted to drive the set works. 0nd in the provision of an adjustable set works which, once set, is practically automatically operated. Thirdly, in the provision of means for taking up or compensating for wear of the screws which actuate the knees. Fourthly, in the novel construction of the set works mechanism.

As one exemplification of our invention we have provided the following construc tion.

Mounted upon a platform 6 secured to the carriage are the standards 7 on which is supported a motor 8 which may be either a gasolene or electric motor. Interposed between the motor and its support is a resilient or yielding support 9 which relieves the motor and its shaft 10 from strain and permits a sufficient movement of the motor and its shaft as will be shortly explained. The shaft 10 of the motor, near its free end, is received in a bearing and at its free end the shaft is equipped with a friction pinion 18.

A countershaft 14. journaled in the frame of the carriage supports intermediate its ends a friction wheel 15 having the annular concentric flanges 16, 17 projecting therefrom and the friction pinion 13 is received between the flanges, the distance between Sec- which is greater than the diameter of the friction pinion 13. The friction pinion is adapted to engage the inner surface of the outer annular flange 16 or the outer surface of the inner annular flange 17 to drive the shaft 14 in one direction or the other. The friction pinion may also assume an idle position intermediate the two flanges at which time, no motion will be imparted to the friction wheel. As one means for effecting this adjustment, we provide a shaft 18 mounted in bearings 39, 39, carried by the standards 40, 40. The shaft passes eccentrically through an opening 41 formed in an extension 42 depending from and connected to the bearing 11 and is provided with a cam 41 adapted to engage the wall of the opening whereby the position of the bearing and consequently of the shaft 10 is shifted vertically to bring the friction pinion 13 into engagement with one or the other of the friction flanges 16 or 17. The movement of the shaft and the consequent slight angular tilting of the motor is accommodated by the yielding support 9 on which the motor is supported, or the motor may be otherwise supported to permit the movement of the shaft necessary to effect the engagement of the friction pinion with either friction flange. As one means for actuating the cam shaft 18, we secure thereto a hand lever 42, the operation of which will throw the cam and raise or lower the shaft. A latch 43 co operates with the hand lever, such latch being adjustable as to height to compensate for wear of the friction surfaces, and normally adapted to retain the lever and hence, the friction pinion in any of its adjusted positions.

The counter-shaft 14 carries at its outer end a beveled pinion 19 adapted to mesh with a larger beveled gear 20 mounted upon and adapted to impart motion to a set shaft 21 extending parallel with the carriage and journaled in the angle boxes 22, 22. This shaft is also provided with the beveled cut pinions 23, 23 meshing with the respective gears 5, 5 of the knee-actuating screws 4, 4. The engagement of the friction pinion 13 with flange 16 will operate to rotate the set shaft in one direction, the engagement of the pinion with the inner flange 17 operating to rotate the shaft in the opposite direction. The ratio of the pinions 23 to the gears 5, 5, is as 2 to 1 as we have found that the knees are more easily operated and the motor can be run at a higher speed, with this ratio.

In order to hold the gears 19 and 20 in close engagement we provide a coiled spring 24 on the set shaft 21, the ends of the spring being seated in one of the angle boxes 22 and in a set collar 25 respectively. The spring 24 is not in itself strong enough to affect the position of the knees.

The adjustment of the knees and cant may be conveniently accomplished by a controller mechanism in the following manner. auxiliary frame 26 is mounted on the carriage and within this frame is mounted a vertically extending shaft 27, the lower end of which is stepped upon a cone bearing 28 carried by a yoke 29 through which passes the set shaft 21. The lower end of the yoke is supported upon a similar cone bearing 30 carried by one end of a foot lever 31 fulcrumed as at 32. The vertical shaft is suitably guided by a bearing 33 in the frame and projects through a dial plate 34 rigidly secured to the top of the frame. The set shaft is equipped with a pinion 34 adapted to mesh with a large bevel. gear 35 keyed on the vertical shaft 27 the ratio of gear 35 to pinion 34 being preferably as 8 is to 1. A radially extending stop arm 36 is loosely journaled on the projecting upper end of the vertical shaft 27. The outer end of the stop arm is provided with a handle 37 and the inner end of the arm carries a radially extending pointer 38 cooperating with an index on the dial plate. Beneath the dial plate is located a curved toothed rack 44 adjustably secured to the frame 26 by means of the set screws 45. The outer end of the stop arm projects beyond the periphery of the dial plate and is slotted to receive a ratchet lever 46 ,pivotally secured to the arm and extending transversely relative thereto, the lower end of the ratchet lever adapted to be received between two adjacent teeth of the rack 44 and is normally maintained in engagement therewith by a spring 47 carried by the radial stop arm and abutting the lower end of the ratchet lever. The stop arm, ratchet lever and rack are strongly made and attached for a purpose now to be described. Keyed to the vertical shaft 27 preferably above the horizontal plane of the rack is a clash arm 48, the outer free end of which is adapted to impinge against the ratchet lever 46. This clash arm also carries a projecting buffer 49 adapted to engage any suitable bumper 50 secured to the frame 26. Normally the clash arm is held in its zero position against the bumper by means of a weight 51 connected by a cable 52 to the free end of the clash arm. The hub 53 of the clash arm has secured thereto a supporting arm 54 projecting at an angle to the clash arm. A curved cable guide 55 is connected to the clash and supporting arms respectively to guide the cable as the clash arm moves away from its Zero position, the cable running over a pulley 56 supported on the frame 26. A space is left between the hub of the clash arm and the dial plate to permit the vertical shaft 27 to be raised through the foot lever 31 to dis engage the gear 35 and the pinion 34 The operation of my device is simple.

The dial plate 84: bears index marks spaced apart from each other. The stop arm 36 is moved in the arc of a circle until the pointer 38 lies over the desired index mark. Thus, if one-inch boards are to be cut from the cant, the pointer lies over the index mark 0. The ratchet lever 16 is then released and the spring 47 locks the lever in the rack 44:. Assuming that the machine is just starting up, the cant or log is on the carriage lying against the knees. The motor 8 is started, thereby rotating shaft 10 and friction pinion 13, the lever 12* being in its intermediate position. By throwing the lever up, the cam 11 throws the bearing 11 up to cause the engagement of the friction pinion with the friction ring 16 thereby rotating the shaft 141-, rotation of which will actuate set shaft 21. The rotation of the set shaft accomplishes three things simultaneously. First it places the spring 24 under tension for the purpose of preventing play between the knees and screws. Secondly, it actuates the gears 5 for rotating the screws, and thirdly, the pinion 34* on the set shaft is actuated to rotate the gear 35 and shaft 27. The actuation of shaft 27 swings the clash arm 48 in the arc of a circle until such arm engages the ratchet lever 46 carried by the stop arm 36, such ratchet lever lying in the path of movement of the clash arm. The stoppage of the clash arm prevents further rotation of shafts 27, 21 and 14, causing the frictions 13 and 16 to slip relative to each other. The movement of the clash arm through the arc of a circle is limited by its zero position and the adjustable ratchet lever l6 has permitted the rotation of the set shaft and the consequent movement of the knees through a distance corresponding to the indication on the dial plate. In the instance noted, the knees have been moved slightly more than one inch, thereby setting the cant or log over a similar distance. The carriage is now moved in any suitable manner (not shown) past the saw, to cut a board of one inch thickness from the log, the extra distance beyond one inch through which the cant has been moved, being the width of the kerf formed by the saw. The motor 8 is running continuously and when the carriage is returning to starting position, the operator will first move lever 42* to its intermediate position and then place his foot on the foot lever 31, thereby raising the vertical shaft 27 and its connected parts to disengage gear 35 from pinion 346*. As soon as such disengagement is effected, the weight 51 which has been raised by the movement of the clash arm first described, descends, drawing the clash arm back to zero position. The release of the foot lever places gear 35 and pinion 3 1*" in mesh once more, the lever 42* is moved to throw friction 13 against friction ring 16 and the foregoing operation repeated. hen the log has run out, the friction 13 is thrown into contact with friction ring 17 which reverses the rotation of the set shaft and by disengaging gear 3 1 and pinion 35, the knees will be returned to normal position.

It is evident that many changes might be made in the form, arrangement and operation of the several parts described without departing from the spirit and scope of our invention.

Having thus fully disclosed our invention, what we claim as new, is

1. A set works for saw mill carriages. comprising a carriage, knees movably supported on the carriage, means for moving the knees, and a motor mounted on and traveling with the carriage, the motor adapted to bodily angular movement and adapted to actuate the knee-actuating means in either direction.

2. A set works for saw mill carriages, comprising a traveling carriage, knees movably mounted on the carriage, a set shaft for actuating the knees, a motor mounted upon and traveling with the carriage, the motor being supported for bodily movement relative to the carriage, a motor shaft, a drive member on the motor shaft, a driven member connected with the set shaft, and means for moving the motor and drive member relative to the driven member to cause engagement or disengagement of the drive member and driven member.

3. A set works for saw mill carriages, comprising a traveling carriage, knees movably mounted thereon, a set shaft for actn ating the knees, a cushioned support on the carriage, a motor mounted on such support, a motor shaft, a drive member on the motor shaft, a driven member connected with the set shaft, and means for oscillating the motor, motor shaft, and drive member to engage and disengage the latter relative to the driven member.

4. A set works for saw mill carriages, comprising a traveling carriage, knees movably mounted thereon, a set shaft for actuating the knees, a motor supported for bodily movement on the carriage, a drive pinion actuated by the motor, a rotatably mounted wheel having concentric rings between which the pinion is received, the wheel connected with the set shaft, and means for swinging the motor and pinion to cause its engagement and disengagement with one or the other of the concentric rings.

5. A set works for saw mill carriages, comprising a traveling carriage, knees movably mounted thereon, a set shaft for actuating the knees, a motor mounted for bodily movement on the carriage, a motor shaft, a drive pinion on the motor shaft actuated by the motor, a driven member connected with the set shaft and provided with oppositely disposed driving surfaces, a bearing on the motor shaft, and means for shifting the bearing to move the motor and to move the drive pinion into or out of engagement with either of said driving surfaces of the driven member.

6. A set works for saw mill carriages, comprising a traveling carriage, knees movably mounted thereon, a set shaft for actuating the knees, a motor mounted for bodily angular movement on the carriage, a motor shaft, a drive pinion on the motor shaft actuated by the motor, a driven member connected with the set shaft, a bearing on the motor shaft, the bearing having an apertured extension, a suitably journaled cam shaft having a cam thereon, received in and adapted to engage the walls of the aperture, and means for rotating the cam shaft to move the drive pinion into and out of engagement with the driven member.

7. A set works for saw mill carriages comprising a carriage, knees mounted thereon, a set shaft for actuating the knees, means for actuating the set shaft, a vertically supported shaft, gearing connecting the set shaft and the vertical shaft, means for actuating one shaft relative to the other to engage and disengage the gearing, a stationary rack, a stationary dial plate, a stop arm rotatable relative to the dial plate, a latch carried by the stop arm and releasably engaging the rack, a clash arm fast on the shaft, the latch adapted to lie in the path of movement of the clash arm, and yielding means for normally retaining the clash arm at zero position.

8. A set works for saw mill carriages comprising a carriage, knees mounted thereon, a set shaft for actuating the knees, means for actuating the set shaft, a controller shaft, means adapted to connect the set and conroller shafts, means for throwing the connecting means into or out of operation, an adjustable stop arm, a clash arm fast on the controller shaft, the stop arm located in the path of movement of the clash arm, and means normally tending to retain the clash arm at zero position.

9. A set works for saw mill carriages comprising a carriage, knees mounted thereon, a set shaft for actuating the knees, means for actuating the set shaft, a controller mechanism, manually controlled means for connecting or disconnecting the controller mechanism and the set shaft, the controller mechanism comprising a stop member, and a clash arm actuated through the set shaft and adapted to engage the stop member whereby to limit the rotation of the set shaft, and means normally tending to retain the clash arm at zero position.

10. A set works for saw mill carriages comprising a carriage, knees mounted thereon, a set shaft for actuating the knees, a friction driving means for rotating the set shaft, a controller mechanism, manually controlled means for connecting or disconnecting the controller mechanismand the set shaft, the controller mechanism comprising a stop member, and a clash arm actuated through the set shaft and adapted to engage the stop member whereby to limit the rotation of the set shaft, and means normally tending to retain the clash arm at 'Zero position.

11. The combination with a rotatable shaft, and friction gearing for actuating the shaft, of a controller mechanism operated by the shaft for limiting'the amount of rotation imparted to the shaft, the controller mechanism consisting of a controller shaft, means for releasably connecting the controller and set shafts operatively, a stop member, a clash arm carried by the controller shaft and adapted to impinge against the stop member, and means for automatically.

withdrawing the clash arm from the stop member.

12. The combination with a rotatable shaft, and friction gearing for actuating the shaft, of a controller mechanism operated by the shaft for limiting the amount of rotation imparted to the shaft, the controller mechanism consisting of a controller shaft, a foot lever-on which the controller shaft is stepped and adapted to raise and lower said controller shaft, gearing normally connecting the controller and set shafts, an adjustable stop, a clash arm carried by the controller shaft and adapted to engage the stop, and means for automatically withdrawing the clash arm from the stop.

13. The combination with a rotatable shaft, and friction gearing for actuating the shaft, of a controller mechanism operated by the shaft for limiting the amount of rotation imparted to the shaft, the controller mechanism comprising a controller shaft, means for releasably connecting the controller and set shafts operatively, a clash arm secured to the controller shaft, means normally tending to retain the clash arm atone limit of its movement, an adjustable stop, a latch carried by the stop and lying in the path of movement of the clash arm, and a rack engaged by the latch.

14. The combination with a rotatable shaft, and friction gearing for actuating the shaft, of a controller mechanism operated by the shaft for limiting the amount of rotation imparted to the shaft, the controller mechanism comprising a controller shaft, means for releasably connecting the controller and set shafts operatively, a clash arm secured to the controller shaft, a weight, a flexible stop arm, a latch carried by the stop arm and means connecting the weight and clash arm, i In testimony whereof, We afiix our signaa bumper against which the Weight nortures in presence of tWO witnesses. inally retains the clash arm, an adjustable MICHAEL GARLAND T T p1'0 ect1ng lnto the path of movement of the HARRISON GARLAN clash arm, a rack releasably engaged by the Vitnesses: latch, and a, guide for the flexible connec- KATHRYN WATTERs, tion, such guide supported by the clash arm. DORALOYNE HOOVER. 

